linux-kernel - Re: [PATCH v2] mm: Fix possible off-by-one in walk_pte

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Message-ID: <18437.44903.306912.321024@harpo.it.uu.se>
Date:	Wed, 16 Apr 2008 09:48:55 +0200
From:	Mikael Pettersson <mikpe@...uu.se>
To:	Johannes Weiner <hannes@...urebad.de>
Cc:	Mikael Pettersson <mikpe@...uu.se>,
	LKML <linux-kernel@...r.kernel.org>,
	Roel Kluin <12o3l@...cali.nl>, Andreas Schwab <schwab@...e.de>,
	Matt Mackall <mpm@...enic.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] mm: Fix possible off-by-one in walk_pte_range()

Johannes Weiner writes:
 > From: Johannes Weiner <hannes@...urebad.de>
 > Subject: [PATCH] mm: Fix possible off-by-one in walk_pte_range()
 > 
 > After the loop in walk_pte_range() pte might point to the first address
 > after the pmd it walks.  The pte_unmap() is then applied to something
 > bad.
 > 
 > Spotted by Roel Kluin and Andreas Schwab.
 > 
 > Signed-off-by: Johannes Weiner <hannes@...urebad.de>
 > CC: Roel Kluin <12o3l@...cali.nl>
 > CC: Andreas Schwab <schwab@...e.de>
 > CC: Matt Mackall <mpm@...enic.com>
 > CC: Andrew Morton <akpm@...ux-foundation.org>

Thanks, v2 looks much nicer.

Acked-by: Mikael Pettersson <mikpe@...uu.se>
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